Atoms, Atomic Theory, & The Periodic Table

Which scientist was the first person responsible for proposing the idea of atoms?

• Democritus

• John Dalton

• Ernest Rutherford

• J.J. Thomson

• Niels Bohr

What is the charge of a proton?

• Negative

• Positive

• Neutral

What is the charge of a neutron?

• Negative

• Positive

• Neutral

True or False:

Atoms are the basic building blocks of most of the matter around you.

• true

• false

Tags

NGSS.MS-PS1-1

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Tags

NGSS.MS-PS2-3

These will determine what element an atom is. 

• number of neutrons
• number of electrons
• number of atoms 
• number of protons 

The number 16 for the atomic element sulfur is the

• ionic number

• isotope

• atomic mass

• atomic number

Tags

NGSS.MS-PS1-1

How many protons does sulfur have?

• 32

• 16

• 48

• 12

An atom of the element with atomic number 6 always has _____.

• six protons in its nucleus
• an atomic mass of six
• more than six neutrons
• six electron clouds

What are subatomic particles? 

• the nucleus 
• electron cloud
• positive charge
• electrons, protons, and neutrons

Tags

NGSS.MS-PS1-1